Paper-calendering machine



UNTTE STATES ATENT OFFICE.

JOHN MOLAUGHLIN, OF LEE, MASSACHUSETTS.

PAPER-CALENDERING MACHINE.

SPECIFICATION forming part of Letters Patent No, 242,550, dated June 7,1881.

Application filed April 30, 1881.

T 0 all whom it may concern:

Be it known that 1, JOHN MCLAUGHLIN, of Lee, county of Berkshire, Stateof Massachusetts, have invented a certain new and useful Improvement inlaper-Galendering Machines, of which the following is a specification.

This improvement in paper-calendering machines relates to the fingersfor stripping the sheets of paper off the last roller. Saidstripping-fingers as heretofore made are secured to one red, and theirends caused to press against the roller by means of a weight or springactualing the rod. The fingers are rigid 0n the red as regards lateralmovement, and consequently bear always on the same parts of the roller,which necessitates irequent refitting of the same by grinding; otherwisethese grooves markthepaperbeingcalendered. Now, i overcome thisobjectionable feature in calendering-machines by making thestrippingfingers independent in their action on the last roller bysecuring them to separate blocks provided with adjustable weights, tocause the fingers to independently bear with the proper force againstthe roller, and the blocks have open bearings, by which they are placedon a fixed rod, thus enabling each fin gerto be moved laterally, so thatits end may bear on different parts of the roller, thus causing an evenwear to the surface of the roller. The fingers may be moved laterally,as desired, by the attendant while the machine is in operation, or takenoff and placed and arranged on the fixed bar, to suit the sizes of thesheets of paper being calendered. T

To describe my invention more particularly I will refer to theaccompanying drawings, forming part of this specification, in which-Figure l is a perspective view of my independent detachable finger forcalendering machines. Fig. 2 is an elevation of a calenderingmachinewith the independent detachable tingers in position to strip the paperoff the last roller; and Fig. 3 is a transverse sectional elevation ofthe same.

Only sufficient of a calendering-machine is shown to illustrate theapplication of my improved stripping-fingers thereto.

a a are the side frames, and I), c, and d the rollers. 61 is the lastroller, and it is against this that the stripping-fingers e c bear todis- (No model.)

charge the paper from it into the receivingbox. Three stripping-fingersonly are here shown, it of course being understood that the number ofthem will depend on the size of the machine and quality and size of thepaper hein g calendered.

Fig. 1 illustrates the essential features of my invention. The finger eis secured in an angular position to the block or head fby means of thescrew 6, which passes through a slot in the lower end of the finger toenable the upper end, 0 which is tapered off to a sharp edge, so as tolie close to the roller 61, to be set in line with the ends of the otherfingers, to strip the paper evenly off the rollerd. The head or block fhas an open bearing,f, by which it rests on the fixed rod g, secured inbrackets from the side frames, a a and projecting from'its sides in ahorizontal position under the free end of the finger 0 is the rodf whichmay be cast with the block or head f, or be screwed or driven in a holetherein; and on this rod f 2 is placed the pressure-weight h, securedthereto by a screw. The position in which this weight It is set ontherod determines the pressure of the end c of the finger against theroller (1. Each finger, with its carrying block or head f andpressure-weight h, being independent, and merely resting on the fixedrod y, it will be observed may be set to bear on any part of the rollerd desired, and be shifted about, so as to prevent grooves being worn inthe roller, and also be readily removed from and replaced on the rod g,accordin g to the number required to properly strip the sheets of paperfrom the roller 01.

I have shown tapes t' i on small pulleys i1 6 arranged and adapted toconvey the paper off the fingers c 6 into a receptacle, which will beplaced under the lower pulleys, 11 but is not shown in the drawings,because the same forms no part of my invention. Other arrangements ofguide tapes or rollers may be used with these independent detachablestripping-fingers, or the sheets of paper may pass directly from thefingers into the receptacle; and the blocks or heads f andpressure-weights h, and the method of securing them and the fingers e tothe blocks fmay be modified without departing from the nature of myinvention.

Having now described the construction and tion, the finger 0, block orhead f, provided with the open bearin g f, and pressure-weight h,substantially as and for the purpose hereinbefore set forth. I 5 Intestimony whereof I have hereunto set my hand this 26th day ofApril A.D. 1881.

JOHN MGLAUGHLIN.

Witnesses:

J. L. KILBON, FRANK SAVAGE.

